Porous g-C3N4/WO3 photocatalyst prepared by simple calcination for efficient hydrogen generation under visible light

[Display omitted] A novel porous g-C3N4/WO3 photocatalyst was successfully obtained by adopting urea and WO3⋅0.33H2O as precursor by a simple hydrothermal and calcination method. The structural characteristics, photoelectric properties, and hydrogen generation efficiency of g-C3N4/WO3 were studied....

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2020-06, Vol.594, p.124653, Article 124653
Main Authors: Sun, Xian-Yang, Zhang, Feng-Jun, Kong, Cui
Format: Article
Language:English
Subjects:
g-C3N4/WO3
Nano-pores
Photocatalytic hydrogen generation
WO3⋅0.33H2O
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Summary:[Display omitted] A novel porous g-C3N4/WO3 photocatalyst was successfully obtained by adopting urea and WO3⋅0.33H2O as precursor by a simple hydrothermal and calcination method. The structural characteristics, photoelectric properties, and hydrogen generation efficiency of g-C3N4/WO3 were studied. The results shows that best photocatalytic hydrogen generation efficiency of the g-C3N4/WO3 was 963 μmol−1 h−1, it was about 3 times than pure g-C3N4. Hydrated tungsten oxide promotes the formation of porous structure after removing crystal water, and the increased pore volume and pore size provide more reactive activity sites, which contribute to increase the efficiency of hydrogen generation. The mechanism of photocatalytic hydrogen generation was proposed.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2020.124653